Php 获取sql中多个列的总数

在数据库中，我有这样的表：

| id  hotel_id | room_id | Ac_rooms | Non_ac_rooms | simple_rooms | Furnitured_room | other_rooms | added_by  |
| 9            |     2   |      3   |       2       |      6      |       12        |      21      |      raj  |

我想从SQL查询中获取房间总数（即房间id、空调房间、非空调房间、简单房间、家具房间、其他房间的总数）

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从SQL查询中获取总数的最佳方法是什么？我需要行的总数。

如果我理解正确，您只需要总数

select (ac_rooms + Non_ac_rooms + simple_rooms + Furnitured_room + other_rooms) as total_rooms from YOUR_TABLE

您还指定了查找总行数，这可以通过使用standart

count

函数获得

select count(*) as number_of_rows from YOUR_TABLE

或者，您可能正在查找所有行中的房间类型的总和？那样的话，你需要

select sum(ac_rooms ), sum(Non_ac_rooms), sum(simple_rooms), sum(Furnitured_room), sum(other_rooms) from YOUR_TABLE

UPD：如果我没弄错的话，你需要这个

select sum(ac_rooms ) as ac_rooms_total,
       sum(Non_ac_rooms) as non_ac_rooms_total,
       sum(simple_rooms) as simple_rooms_total,
       sum(Furnitured_room) as furnitured_room_total,
       sum(other_rooms) as other_rooms_total,
       sum(ac_rooms + Non_ac_rooms + simple_rooms + Furnitured_room + other_rooms) as TOTAL
from YOUR_TABLE

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如果我没弄错的话，你只需要总数

select (ac_rooms + Non_ac_rooms + simple_rooms + Furnitured_room + other_rooms) as total_rooms from YOUR_TABLE

您还指定了查找总行数，这可以通过使用standart

count

函数获得

select count(*) as number_of_rows from YOUR_TABLE

或者，您可能正在查找所有行中的房间类型的总和？那样的话，你需要

select sum(ac_rooms ), sum(Non_ac_rooms), sum(simple_rooms), sum(Furnitured_room), sum(other_rooms) from YOUR_TABLE

UPD：如果我没弄错的话，你需要这个

select sum(ac_rooms ) as ac_rooms_total,
       sum(Non_ac_rooms) as non_ac_rooms_total,
       sum(simple_rooms) as simple_rooms_total,
       sum(Furnitured_room) as furnitured_room_total,
       sum(other_rooms) as other_rooms_total,
       sum(ac_rooms + Non_ac_rooms + simple_rooms + Furnitured_room + other_rooms) as TOTAL
from YOUR_TABLE

试试这个：

SELECT
SUM(Ac_rooms) as Ac_rooms,
SUM(Non_ac_rooms) as Non_ac_rooms,
SUM(Simple_rooms) as Simple_rooms,
SUM(Furnitured_rooms) as Furnitured_room,
SUM(Other_rooms) as Other_rooms,
SUM(Ac_rooms+Non_ac_rooms+Simple_rooms+Furnitured_room+Other_rooms) as Total_rooms,
FROM tbl_rooms

或

试试这个：

SELECT
SUM(Ac_rooms) as Ac_rooms,
SUM(Non_ac_rooms) as Non_ac_rooms,
SUM(Simple_rooms) as Simple_rooms,
SUM(Furnitured_rooms) as Furnitured_room,
SUM(Other_rooms) as Other_rooms,
SUM(Ac_rooms+Non_ac_rooms+Simple_rooms+Furnitured_room+Other_rooms) as Total_rooms,
FROM tbl_rooms

或

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选择空调房间+非空调房间+简单房间+家具房间+其他房间作为TotalRooms

尝试：从表中选择（空调房间+非空调房间+简单房间+家具房间+其他房间）作为TotalRooms（按酒店排序）的总计。我需要一个返回总计数的函数（空调房间|非空调房间|简单房间|家具房间|其他房间）如结果中的10。选择（总和（空调房间）+总和（非空调房间）+总和（简单房间）+总和（家具房间）+总和（其他房间））从你的桌子上看，这种问题是设计拙劣的症状。“房间id+”是如何工作的？

选择空调房间+非空调房间+简单房间+家具房间+其他房间作为总房间

尝试：选择（空调房间+非空调房间+简单房间+家具房间+其他房间）根据酒店的表名订单，我需要一个函数返回总数（空调房间、非空调房间、简单房间、家具房间、其他房间），如结果中的10。选择（总和（空调房间）+总和（非空调房间）+总和（简单房间）+总和（家具房间）+总和（其他房间））从你的表格来看，这类问题是设计拙劣的症状。“房间id+”是如何工作的？@Arushi你能详细说明一下你到底需要什么吗？我需要一个返回总数的函数（空调房间、非空调房间、简单房间、家具房间、其他房间）结果像10。@Arushi我更新了答案，这就是你需要的？@Arushi你能详细说明你到底需要什么吗？我需要一个函数，返回总数（Ac|U房间|非Ac|U房间|简单|U房间|家具|房间|其他|房间），结果像10。@Arushi我更新了答案，你需要什么？